Tortoises do not play in the way a dog or a parrot does, so the word "toys" is a little misleading for this category. What a red-foot needs is enrichment: an environment and a set of objects that draw out its natural behaviors of foraging, exploring, climbing, digging, and investigating novelty. A tortoise given a complex, changing habitat is more active, eats and digests better, and shows fewer of the repetitive pacing behaviors seen in barren enclosures.
The starting point for enrichment is recognizing what the animal actually does in the wild. A red-foot spends much of its day walking forest floors in search of fallen fruit, grazing on plants, nosing under leaf litter, and seeking out humid, sheltered spots. Effective enrichment products and ideas are simply ways to recreate those opportunities inside an enclosure.
Because the behaviors are slow and exploratory rather than fast and playful, the best enrichment tends to be environmental rather than gadget-based. Varied terrain, things to walk over and around, surfaces to dig into, and a steady supply of novelty in the form of new scents, objects, and forage layouts do far more than any single manufactured toy.
Approach this section, then, as a question of habitat complexity rather than a shopping list of playthings. The most valuable purchases are the ones that add texture, variety, and the chance to work for food, and many of the best options can be assembled from safe, simple materials rather than bought off a shelf.